With anticipatory it as subject and infinitive as complement. Worthwhile. Obsolete.

Firmly or solidly established; of solid worth or value; of real significance, weighty; reliable… Of an action, condition, result, idea, etc.

Worth the time or effort spent; of (sufficient) value or importance.

That rewards; providing reward.

Of so much value, worth so much; worth while. Formerly also as an exclamation of contempt or depreciation: So much for…!